Nuclear gauge calibration device



FIG. 1 is a front, top perspective view of a nuclear gauge calibration device showing our design;

FIG. 2 is a bottom, side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a side view thereof, opposite that shown in FIG. 5;

FIG. 8 is a rear view thereof; and,

FIG. 9 is a side perspective environmental view of the nuclear gauge calibration device shown with a nuclear gauge in broken line sitting thereon for calibration.

The broken lines shown herein are for illustrative purposes only and form no part of the claimed design. The different shading on the three blocks shown in FIGS. 1-9 represent respective different visual appearances associated with different materials. 

CLAIM The ornamental design for a nuclear gauge calibration device, as shown and described. 